Home / 78,744.35-108,664.84-42,935.06

Finding the Fourth Proportional to 78,744.35, 108,664.84 and 42,935.06

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Solution

The fourth proportional to 78,744.35, 108,664.84 and 42,935.06 is: 59,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.35 : 108,664.84 = 42,935.06 : x
  2. Step 2: Convert to fraction form
    78,744.35/108,664.84 = 42,935.06/x
  3. Step 3: Cross multiply
    78,744.35x = 108,664.84 × 42,935.06
  4. Step 4: Simplify right side
    78,744.35x = 4,665,531,750.62
  5. Step 5: Solve for x
    x = 4,665,531,750.62/78,744.35
  6. Step 6: Final answer
    x = 59,249.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.